FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes an extracellular matrix protein that appears to function in the regulation of epidermal-basement membrane adhesion and organogenesis during development. Mutations in this gene cause Fraser syndrome, a multisystem malformation that can include craniofacial, urogenital and respiratory system abnormalities. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2009] PHENOTYPE: Mice homozygous for mutations at this locus display a significant amount of embryonic lethality due to hemorrhaging of embryonic blisters. Survival is variable on genetic backgrounds. Kidney development is severely affected and syndactyly is common. [provided by MGI curators]